blob: 545372fcc72f2ad71d4b295dce6b8b2178eecede [file] [log] [blame]
Gary R Hook7d0f5fd2018-06-12 16:41:30 -05001// SPDX-License-Identifier: GPL-2.0
2/*
3 * AMD IOMMU driver
4 *
5 * Copyright (C) 2018 Advanced Micro Devices, Inc.
6 *
7 * Author: Gary R Hook <gary.hook@amd.com>
8 */
9
10#include <linux/debugfs.h>
Gary R Hook7d0f5fd2018-06-12 16:41:30 -050011#include <linux/pci.h>
Joerg Roedel786dfe42020-05-27 13:53:11 +020012
13#include "amd_iommu.h"
Gary R Hook7d0f5fd2018-06-12 16:41:30 -050014
15static struct dentry *amd_iommu_debugfs;
16static DEFINE_MUTEX(amd_iommu_debugfs_lock);
17
18#define MAX_NAME_LEN 20
19
20void amd_iommu_debugfs_setup(struct amd_iommu *iommu)
21{
22 char name[MAX_NAME_LEN + 1];
23
24 mutex_lock(&amd_iommu_debugfs_lock);
25 if (!amd_iommu_debugfs)
26 amd_iommu_debugfs = debugfs_create_dir("amd",
27 iommu_debugfs_dir);
28 mutex_unlock(&amd_iommu_debugfs_lock);
29
30 snprintf(name, MAX_NAME_LEN, "iommu%02d", iommu->index);
31 iommu->debugfs = debugfs_create_dir(name, amd_iommu_debugfs);
32}